Eschar is dead tissue that falls off (sheds) from healthy skin. It is caused by a burn or cauterization (destroying tissue with heat or cold, or another method).
An escharotic is a substance (such as acids, alkalis, carbon dioxide, or metallic salts) that causes the tissue to die and fall off.
Dorland's Online Medical Dictionary. Available at: www.dorlands.com/def.jsp?id=100036901. Accessed May 15, 2015.
Stedman's Online Medical Dictionary. Available at: www.stedmansonline.com/content.aspx?id=mlrE1900000183&termtype=t. Accessed May 15, 2015.
Neil K. Kaneshiro, MD, MHA, clinical assistant professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.